<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		
		<script>
			"use strict"
			
			let obj = {username: "kobe", age: 29}
			let str = "我的名字叫: " + obj.username + ", 我今年的年龄是 " + obj.age
			console.log(str)
			str = `我的名字叫: ${obj.username}, 我今年的年龄是 ${obj.age}`
			console.log(str)
		</script>
	</body>
</html>
